Reliable Auto DB

2015 Audi S6 reliability

Is it reliable?

Owners have filed 5 complaints with NHTSA about the 2015 Audi S6 over 12 years — 0 per year. That is fewer complaints per year than most S6 years here — under the median of the other years, which is 0. NHTSA has 2 recalls on file, including Turbocharger and Occupant classification.

2013 Audi S6
Photo by Matti Blume, resized from the original. Wikimedia Commons CC BY-SA 4.0
Complaints

5

Per year

0

Recalls

2

Years on the road

12

What owners report

The complaints owners file most often name Engine (3 of 5), then Electrical system (1) and Fuel and propulsion system (1). Those filings include 1 that reports a crash.

Next to 2014 and 2016

The 2014 S6 has 20 complaints, 0 per year, and the 2016 has 19 complaints, 1 per year. The 2015 has fewer complaints per year than the 2014. The 2015 has fewer complaints per year than the 2016.

The complaint rate is complaints filed in this year’s first 3 years on the road, divided by however many of those years have passed. Recalls are a separate count. The numbers are for the US-market 2015 Audi S6. How we count. Data as of .

Recalls (2)

Recall engine and cooling, engine, gasoline, turbocharger 2022-03-23 · NHTSA campaign 22V178000
Summary Volkswagen Group of America, Inc. (Audi) is recalling certain 2013-2017 A8, S6 Sedan, S7, S8, and 2014-2017 RS7 vehicles. The turbocharger oil supply strainer can become blocked, causing wear to the bearings due to lack of lubrication.
Remedy Dealers will replace the oil strainer and perform an oil change, free of charge. Owner notification letters were mailed August 4, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 21H7.
Recall air bags, sensor, occupant classification 2018-06-04 · NHTSA campaign 18V370000
Summary Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S6 and S7, 2012-2018 A7 and A6 Sedan, and 2014-2018 RS7 vehicles equipped with basic seats (with or without heating). Stress or wear of the body-sensing mat within the front passenger seat may cause the Passenger Occupant Detection System (PODS) control module to malfunction.
Remedy Volkswagen will notify owners, and dealers will install a PODS system repair kit, free of charge. The recall began November 29, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 74D5.

Complaints by component (5 total)

Engine
3
Electrical system
1
Fuel and propulsion system
1
Steering
1
Suspension
1
Crash-flagged

1

Fire-flagged

0

Injury reports

0

Death reports

0

Complaints filed per year

4202112025
Excerpts from recent NHTSA complaint filings
  • "Steering Module went out for no apparent reason. I was able to find a used one and have it repaired for just under $1000. I had git two quotes for to auto shops that specialize in Audi repairs and they were both over…"
    Steering, Suspension, Electrical system · filed 2025-07-23
  • "Turbos blew causing the vehicle to lose power while trying to merge in traffic."
    Engine · filed 2021-09-01
  • "Multiple turbo failures. Engine shook violently then suddenly stopped in the middle of the road. This same issue happened 3 times affecting both turbos. It may be due to faulty oil filter/strainer. From online research…"
    Engine, Fuel and propulsion system · filed 2021-06-11
  • "I WAS DRIVING DOWN THE HIGHWAY AND MY SUNROOF EXPLODED. THERE WAS A LOUD BANG AND I SAW AND FELT AIR AND DEBRIS COME IN THROUGH MY SUNROOF VISOR VENTS. WHEN I PULLED OVER AND GOT OUT OF THE CAR I SAW MY SUNROOF HAS…"
    Unknown or other · filed 2021-04-06
  • "DRIVING ON THE NEW JERSEY TURNPIKE AND BOTH TURBOCHARGERS FAILED. CAR LOST POWER AND I HAD TO STEER TO SIDE OF THE HIGHWAY WITHOUT POWER STEERING AND BRAKES FROM FAR LEFT LANE. AUDI SERVICE SAYS BEARINGS STARVED OF OIL…"
    Engine · filed 2021-03-23

NHTSA crash ratings

Version Overall Front Side Rollover
2015 Audi S6 4 DR AWD 5 stars 5 stars 5 stars 5 stars

Stars are how this vehicle did in NHTSA crash tests. They are a safety result, separate from the complaint record. Not rated means that test was not run for this version.

Fuel economy

Trim Engine Transmission Drive City Hwy Combined Annual fuel cost
S6 4L, 8-cyl Automatic (AM-S7) All-wheel drive 17 27 20 MPG $4000

Specs and fitment

C7 S6, 2013–2018
Body styles Sedan
Oil 0W-30, 0W-40, 5W-30, or 5W-40 (engine dependent; confirm on cap)
Tire size 255/40R19 (trim dependent)

Known issues for this generation

Recall 18V-370 covers certain 2013-2018 S6 and S7 vehicles (with A6 Sedan, A7, and RS7 equipped with basic seats) where wear of the front-passenger seat body-sensing mat may cause the Passenger Occupant Detection System (PODS) to malfunction so the passenger air bag may not deploy properly; dealers install a PODS repair kit. Recall 22V-178 covers certain 2013-2017 S6 Sedan vehicles (with A8, S7, S8, and RS7) whose turbocharger oil-supply strainer can become blocked, risking turbo bearing wear and an engine stall; dealers replace the strainer and change the oil. Both campaigns’ unit totals include the other Audi models named in NHTSA’s summaries.

Compare

Previous year 2014 Audi S6 Next year 2016 Audi S6 See every Audi S6 model year →

Frequently asked questions

Is the 2015 Audi S6 reliable?

Owners have filed 5 complaints with NHTSA about the 2015 Audi S6 over 12 years — 0 per year. That is fewer complaints per year than most S6 years here — under the median of the other years, which is 0. NHTSA has 2 recalls on file, including Turbocharger and Occupant classification.

What are common problems with a 2015 Audi S6?

The complaints owners file most often name Engine (3 of 5), then Electrical system (1) and Fuel and propulsion system (1). Those filings include 1 that reports a crash.

Is the 2015 Audi S6 more reliable than the years next to it?

The 2014 S6 has 20 complaints, 0 per year, and the 2016 has 19 complaints, 1 per year. The 2015 has fewer complaints per year than the 2014. The 2015 has fewer complaints per year than the 2016.

Has the 2015 Audi S6 been recalled?

The 2015 Audi S6 has 2 recalls on file with NHTSA. See the recalls table on this page for dates, components, and remedies.

How many complaints have owners filed about the 2015 Audi S6?

Owners have filed 5 complaints about the 2015 Audi S6 with NHTSA.

What mpg does a 2015 Audi S6 get?

EPA-rated combined fuel economy for the 2015 Audi S6 is 20 MPG. See the fuel economy table on this page for city and highway figures by engine and transmission.

What S6 generations does this site track?

C7 (2013-2018) and C8 (2019-on).

What does recall 18V-370 cover on C7 S6?

Certain 2013-2018 S6 and S7 vehicles (with A6 Sedan, A7, and RS7 with basic seats): wear of the front-passenger seat body-sensing mat may cause the Passenger Occupant Detection System to malfunction so the passenger air bag may not deploy correctly.

Is oil specified on this S6 record yet?

Not yet with a sourced US fill — confirm Audi oil spec from the filler cap and owner’s manual.